Magneto hand-generator.



H. P. CLAUSEN.

MAGNETO HAND GENERATOR.

APPLICATION FILED MAR. 22| 1911.

Patented Nov. 9, 1915.

l 2, INVENIUR Qty/07ML g j HENRY F ULAUSEN FER AUDRNEY IINEEEES UNTEBSTEES ATEN QFQE.

HENRY TO S P. CLAUSEN, GF RGOHESTER, NEVI YORK, ASSIGNGR, BY MESNEASSGNMENTS, ERGMBERG-CB-LSON TELEPGNE MANUFACTURING COMPANY, OFROCHESTEL,

NEVI YORK, A CGBPGRTIGN @E NEW YORK, ORGANIZD 1914.

MAGNET@ EAND-GENERTOR.

Application filed Maron 22, 1811.

To ZZ iff/tom t may conc-cra.'

Be it known that l, HENRY P. CLAUSEN7 a citizen oi' the United States,and resident ot' Rochester, county ot lfonroe, State of New York, haveinvented certain nenv and useful Improvements in Magneto`Hand-Generators, of which the following is a specification.

My invention relates to hand generators for use With telephone systemsoit the local battery or generator call type, and, particularly, for usewith systems equipped with harmonic bells at the suhstations.

In systems of this type it is desirable that the subscribers may throwvthe drop at the central ollice to signal the operator Without ringingthe harmonic hells at the other suhscriloers stations on the same line.

By use oi' the magnetos heretofore commonly used in telephone systems ithr heen possible to ring the hells at other subscribers stations byrotating the generator crank at the proper speed to impress upon thelimbs of the telephone line the )articular frequency for sounding someparticular annunciator, and it often happened that suhscribe'rs vv nldhe thus called to their telephones nhen one of the subscribers Wasattempting to signal the central otlice,

The object of my invention is to provide a generator so Wired andconnected that it in presses upon the line peaks of current oi suchshort duration that they have practically no effect upon the variousannunciators even When impressed at the frequencies at Which theannunciators are adapted to ring, hut have the desired effect npon thedrop at the central oiice.

My invention is illustrated in the accompanying drawing, in Which-Figure l is a perspective illustration of a hand generat r embodying thefeatures of my invention, Fig. Q, illustrates my invention as applied toa telephone line.

Referring to Fig. the armature coil 4.1 has its terminals connected tothe conducting disks 5 and 6, 1which are insulated from one another andmounted upon the shaft of the generator. A brush 7 is supported adjacentthe disks 5 and 6 hut normally out of contact therewith, the projections8 and 9 heine' the only portions of the disks which come into actualcontact vrith the brush 7. Conductors 10 and l1 represent the mainconductors leading from the Generator.

Specicaton of Letters Patent.

Serial No. M6355.

in the rotation ot the armature in clocl'- vrise direction theprojection 9 first comes in contact with the brush T and immediatelythereafter the projection 8 comes in contact with the brush 7; thus thearmature Winding el is short-circuited during the of the projectionsunder the brush. rlhe projection 9, being the iirst to connect with thebrush, is also the irst to disconnect therefrom, at which instant thearmature circuit is completed to line through the disk 6, projection Sand brush '7 to conductor ll, and directly from the other terminal otthe armature Winding to conductor l0.

The disks 5 and 6 are set in such a position upon the shaft that theshort-circuitiirg` of the armature occurs just heiiore the rerersal ofmagnetism has occurred through the armature core. 'if heshort-circuiting o the armature opposes the dying out or re- Versal ofthe magnetic lines, and, therefore, the rotation of the armature carriesthe niagnetic lines into a distorted position so that, upon theinterruption of the short circuit, the magnetic flux in the armaturevery quickly reverses its direction, thus sending upon trie line aninstantaneous peak ot current at a rery high voltage. This current is ofsuch short duration that the harmonic bells on the line, Whose armaturesare provided with considerable inertia, are not atiected, but thecentral oliice drop, Whose armature is light, is readily operated.

In Fig. l the generator illustrated is provided With permanent magnets20, forming the magnetic leld for the armature which is supported uponthe shaft carrying the disks 5 and 6. One terminal of the armature isgrounded to the shaft and the metal parts of the generator, and the disk5 is likewise electrically connected to and carried directly upon theshaft, The disk 6 is separated from the disk 5 by means of an insulatingdisk 2l, the disk 6 being electrically connected with the secondterminal of the armature ivinding by means of a pin carried through thecenter of the shaft in an insulated manner to a point Within the hearingin which the shaft rotates.

The brush 7 is secured to the insulating block 22, and is provided Withconnection terminal 23, to which one of the line conductors may beattached. The other line conductor may he attached t0 the connec- CIition terminal 24, which becomes electrically connected with the trame ofthe generat r through the contact of springs 25 and 26 when thegenerator is in motion, this being accomplished by a cam in the shaft27, which eliects a movement of the spring 26 into engagement with thespring 25 whenever the shaft is rotated. Y

@ther features oi' the device and system to which my invention has beenapplied. which are not speciiically described herein, are well known inthe art, and their detailed description is unnecessary to the ceinpleteunderstanding et my invention.

`Wliile my improvement is described in respect to the speciiicniodiiication herein illustrated, it is to be understood that l do notwish to be unduly limited thereto, other modifications being possiblewithout departing from the spirit and scope of my invention. Y

I claiml. ln a hand generator for telephone lines, the combination withan armature and its windings, cfa pair of contact pieces con nected withthe terminals of said winding and rotatable with the armature, a brushadapted to be engaged by both ci said contacting pieces in the rotationoi the armature and to be shortly thereafter disengaged by said contactpieces, the disengagement from one contact piece occurring slightlybefore the disengagement from the other contact piece, contacting means`permanently ccnnecting the rst or" said contact pieces to be disengagedwith one side of an external circuit, said brush being connected with tl'e other side of said external circuit whereby an impulse of currentfrom said armature will be delivered to the external circuit, tne

Copies of this patent may ne obtained for duration of said impulse beingequal to the time between the breaking of the connection between thebrush and the first contact piece and the breaking of the connectionbetween said brush and the second contact piece.

2. A hand generator provided with an armature, a pinion gear for thearmature, a larger gear engaging therewith, a handle for driving thelarger gear, a winding for the armature, a pair of terminals for thewinding, a brush arranged for engagement with said terminals in therotation of the armature, the period of engageinentvof said brush withsaid terminals being ot short duration whereby the short circuit of thearmature winding does not materially retard the armature, terminalsbeing so posi-v tioned as to disconnect from said brush, one slightly inadvance of the other, said brush and the first of said terminals fromwhich it disconnects serving for connection with an externalV circuit.

3. A generator provided with anv arma- Y ture winding, rotatingsegmental terminals for said winding, conducting means engaging saidsegmental terminals to short circuit the armature, said vsegmentalterminals being arranged to disengage said conducting means one inadvance of the other, and an external circuit connected between saidconducting means and the iirst of said segmental terminals to bedisengaged thereby.

Signed by me at Rochester, county oi"- Monroe. and State of New York, inthe presence of two witnesses.

HENRY P. CLAUSE-J.

lWitnesses CHARLES E. HAGUE, TERESA A. BUCKLEY.

tive cents each, by addressing the Commissioner of Patents, "Washington,D. C. i

